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Finding the Fourth Proportional to 19,008.96, 28,501.29 and 7,923.30

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Solution

The fourth proportional to 19,008.96, 28,501.29 and 7,923.30 is: 11,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.96 : 28,501.29 = 7,923.30 : x
  2. Step 2: Convert to fraction form
    19,008.96/28,501.29 = 7,923.30/x
  3. Step 3: Cross multiply
    19,008.96x = 28,501.29 × 7,923.30
  4. Step 4: Simplify right side
    19,008.96x = 225,824,271.06
  5. Step 5: Solve for x
    x = 225,824,271.06/19,008.96
  6. Step 6: Final answer
    x = 11,879.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.